Bought a cr5 engine recently for an AF project. Took a look inside the intake and exhaust ports and this is what I found. I'm curious if this kind of port work is going to kill my bottom end. It's for a trail bike so I ...
Any chance a 84 bottom end could have a later year top end bolt up to it? I'm trying to source an engine but the only one I can find at a decent price is a 84. I'm thinking of buying it up and swaping out the cylinder and head with later year parts from ebay. Yay or nay?